<template>
    <div class="login_container">
        <div class="login_box">
            <div class="avater_box">
                <img src="../assets/logo.png" alt="用户头像">
            </div>
            <div>
                <!-- 登录表单区域 -->
                <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px"  class="login_form">
                    <!-- 用户名 -->
                    <el-form-item prop="username">
                        <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
                    </el-form-item>
                    <!-- 密码 -->
                    <el-form-item prop="password">
                        <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
                    </el-form-item>
                    <!-- 按钮 -->
                    <el-form-item class="btns">
                        <el-button type="primary" @click="login">登录</el-button>
                        <el-button type="info" @click="resetLoginForm">重置</el-button>
                    </el-form-item>
                </el-form>
            </div>
        </div>
    </div>
</template>

<script>
export default {
    data () {
        return {
            // 登录表单的数据绑定对象
           loginForm: {
               username: 'admin',
               password: '123456'
           },
        // 表单验证规则对象
           loginFormRules: {
            // 验证用户名是否合法
               username: [
                    { required: true, message: '用户名长度在3-10个字符', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
               ],
            // 验证密码是否合法
               password: [
                   { required: true, message: '请输入登录密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
               ]
           }
        };
    },
    methods: {
        resetLoginForm () {
            this.$refs.loginFormRef.resetFields();
        },
        login () {
            this.$refs.loginFormRef.validate(async valid => {
                if (!valid) return;
                const { data: res } = await this.$http.post('login', this.loginForm);
                console.log(res);
                if (res.meta.status !== 200) return this.$message.error('登录失败！')
                this.$message.success('登录成功！');
                console.log(res);
                window.sessionStorage.setItem('token', res.data.token);
                this.$router.push('/home')
            });
        }
    }
};
</script>

<style lang="less" scoped>
.login_container {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  overflow-y: auto;
  background-color: #2b4b6b;
}
.login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}
.avater_box {
    height: 130px;
    width: 130px;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: #fff;
    img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
}

.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

.btns {
    display: flex;
    justify-content: flex-end;
}
</style>
